Fit System K Source 10" Day/Night Interior Rear View Mirror — Manual Flip Anti-Glare, Shatter-Resistant

Fit System K Source DN100 is a universal 10-inch day/night interior rear view mirror with a manual flip switch, shatter-resistant glass, and simple fitment to most factory bases. Upgrade your cabin sightlines with a replaceable interior mirror that balances wide visibility and night-time comfort. The K Source DN100 (sold under Fit System) gives a larger reflective surface than many stock mirrors while adding a manual anti-glare flip position to curb headlight glare. Built from reinforced, shatter-resistant glass and designed to mount on most factory mirror bases, it’s a practical, low-effort way to improve safety, reduce eye strain, and restore a factory-style look without complicated wiring or hardware.

How does the day/night flip switch reduce glare while driving?

The DN100 uses a simple mechanical tilt to change the mirror’s reflective angle for brighter or darker conditions. Flip the small lever to engage the night position, which dims reflected headlights and reduces eye fatigue from trailing vehicles. This manual solution is reliable, requires no power, and works immediately whenever glare becomes an issue.

• One-handed flip switch for quick transition between modes
• Mechanical operation — no electronics to fail
• Effective against high-beam reflections and bright taillights

Will this mirror fit my car, truck, SUV, or van?

The DN100 is a universal replacement engineered to align with most factory interior rearview bases. It accepts common mounting posts and includes hardware that matches standard aftermarket and OEM attachment sizes. If your factory mirror mounts with a standard rectangular or D-shaped post, this mirror is very likely to install directly without drilling or custom adapters.

• Compatible with most factory mirror bases and common mounting posts
• Designed as a direct swap for many cars, vans, trucks, and SUVs
• Quick, do-it-yourself installation — no special tools required in most cases

What durability and safety features does the mirror offer?

The DN100 uses reinforced, shatter-resistant glass to help prevent dangerous shards in a collision or from road debris. The mirror housing and glass are manufactured to resist everyday impacts and vibration so the reflective surface remains clear and aligned. Backed by decades of mirror expertise from K Source/Fit System, the product is built to meet typical automotive longevity expectations.

• Shatter-resistant glass for added safety in impact situations
• Robust housing designed to resist vibration and maintain alignment
• Quality control informed by decades of mirror manufacturing experience

How easy is the install and what tools are needed?

Installation is straightforward for most owners: remove the factory mirror, slide the DN100 onto the existing base, and secure per standard mirror mount instructions. No electrical connections are necessary since the anti-glare function is manual, so installation time is typically under 20 minutes. Basic hand tools like a screwdriver or wrench may be all that’s needed depending on your vehicle’s mounting hardware.

• Manual, plug-free installation — no wiring or electronics
• Fits existing factory bases in most vehicles for fast replacement
• Requires only common hand tools in most cases

Who is this for Drivers who want a simple, effective upgrade to their interior rear view mirror will find the Fit System K Source DN100 a practical choice. It’s ideal for owners of older vehicles with worn factory mirrors, those experiencing nighttime glare, or anyone who prefers a larger viewing surface for better rearward awareness. Professionals who need a reliable, serviceable mirror replacement for fleet, commercial vehicles, or personal cars and trucks will appreciate the DN100’s compatibility, durability, and straightforward installation.

FAQ

Q: Does the mirror require wiring or power?

A: No, the DN100 uses a manual flip switch for day/night adjustment and requires no electrical connection.

Q: Can I install it myself?

A: Yes, most installations are simple swaps onto existing factory mirror bases using common hand tools.